Valve.



-. No. 707,337. Patented Aug. 19,1902.

J. H. KOCH. j VALVE.

(Application led Aug. 5. 1901.) (No Mfudel.)

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v W W @V 2H C nozzle portion 1 anda valve-seat portion 2.

`ance with the height of the liquid in a tank.

Unirse Smarts l JOHN HENRY KOCH, OF SCRANTON, PENNSYLVANIA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 707,337, dated August 19, 1902.

Application filed August 5, 1901.

To all whom t may concern: Y

Be it known that 1, JonN HENRY KOCH, a citizen of the United States, residing at Scranton, in the county'of Lackawanna'andA State of Pennsylvania, haveinvented certain newand useful Improvements in Valves; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in valves, and particularly to tank-valveswhich are adapted to be opened or closed in accord- It consists in a valve having a suitable casing and formed with a countersunk valveseat, a valve-plunger adapted to be forced against said seat, and levers and links connecting said plunger with a ioat mechanism, so that the valve will be' controlledV by the height of the liquidin the tank in which the valve is used. f n Y It further consists in certain other novel constructions, a combinations, and arrange# ments ofparts, as'will'be'hereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 represents a vertical section through a portion -of a tank, a'valve being shown located therein in side elevation. Fig. 2 is a vertical central section through the valve and its casing, the valve-plunger beingu shown seated. Fig. 3 is a similar detail sectional view, but showing the valve raised from its seat.

The valve forming the subject-matter of the' present invention is so designed that it may be easily taken apart for repairing or for other purposes and yet is so made that itis exceedingly effective for automatically regulating the inlow'of water or other liquids to a tank or other similar receptacle. The valve is constructed with a divisiblecasin'g made up of a The valve-seat portion 2 is formed with a re-l duced screw-threaded end 3, adapted to be snugly screwed into the nozzle portion 1. The seat portion 2 is also provided with a iiange, as 4f, which rests against the inner surface of the tank or other receptacle in which the valve is mounted. This seat portion is made suficiently long to project through the bottom of a tank and is screw-threaded on its periph- -tight joint at this point.

, the same. standard 17, carried by the cap 8, the said vlever being pivoted theretoat its outer end, as at 18.

Serial No. 70,991. (No model.)

screwed thereontightly against the bottom of the tank for tightly drawing the seated portion in its position and forming a liquid- The seated portion is formed with a bore of suitable size, which -is somewhat contracted at 6, just below the valve-seat 7. The valve-seat 7 is formed by making a countersunk recessin the upper end of the seat portion 2 of the valve-casing, as clearly illustrated in'Figs. 2 and '3 of the drawings. is provided with a cap` 8, which is formed with a screw-threaded portion adapted to be tightly screwed into anaperture 9, formed in the top of the nozzle member of the valve. interposed between the cap 8 and said nozzle portion 1 for forming a tight joint. The cap portion 8 is formed with a central bore, as 11, within which fits snugly a valve-plunger 12.4 The valve-plunger 12` projects well into the nozzle member 1 o'f the valve andv extends to a point within suitable proximity to the valveseat 7. A washer of leather or other yielding or flexible material, as 13, is secured upon the end of the valve 12 by means of an integer 12 near its end. The upper end of the The nozzle portion 1 offthe casing plunger projects from the -ca'p 8 and is provided with an lelongated slot l5, forming a bearing for a lever 16, which passes through The'lever 16`is fulcrumed upon a The lever where it passes through the slot 13 in the plunger is formed with a downwardly-projecting bearing, as 19, which engages a bearing-surface Within the said slot for forcingthe valve-plunger downwardly. The cap 8 also carries a second standard, as 20, which is slotted to accommodatethe lever 16 in its movement, and to the upper end of ceives a float-rod, as 23, made of considerable length and carrying at its end a buoyant float, as 24, of any suitable construction.

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When the above valve mechanism is arranged in a tank and water or other liquid which it may contain is run out of the tank, the float 24 will of course be lowered therein and the lever 2l will be so moved as to raise the lever 16, and thereby permit the plunger l2 to be raised from its seat. The valve-seat member 2 of the valve-casing is connected with any suitable inlet-supply of water or other liquid under pressure. As soon as the pressure is relieved from the upper end of the valve-plunger by the descent of the float 24C the pressure of the liquid in the inlet-pipe will force the valve-plunger from its seat 7 and the flow into the nozzle member of said valve and thence into the tank. As the water fills the tank the float 24 will be gradually raised, and the lever 16 will thereby be forced downwardly against the valve-plunger 12. This will operate to force the valve against the seat '7, and so finally completely close the inlet for shutting olf the flow of water or other liquid. The arrangement of parts is such that the float will have a free powerful lever age upon the valve-plunger for forcing it against its seat. It will be further seen that the plunger of the valve can be taken out of the casing without disturbing the nozzle meinher or the valve-seat member by merely nnscrewing the cap 8. The nozzle-casing can also be removed from the valve-seat member without disturbing the latter or having to disconnect the same from the inlet-pipe. This makes an extremely convenient construction for-repairing or inspecting a valve, and such a valve can be kept in order with very little difficulty.

While I have herein illustrated and described my preferred form of mechanism, it will of course be understood that there can be numerous modifications as to minor details and the relative arrangement of the parts without departing from any of the essential features of the invention or sacrificing any ofthe advantages thereof. For instance, instead of constructing the valve-seat portion 2 and the nozzle portion l of two separate parts and securing the same together for the purpose of connecting them as I have shown I may, if desired, form the two portions in one piece or casting. This and many other minor changes of a like nature maybe made, all of which I regard as coming within the scope of my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. Atank-valve,comprisingacasingformed with an interior valve-seat, a plunger adapted to move longitudinally within said casing, a valve upon the inner end of said plunger designed to engage said valve-seat, the upper end of said plunger'projecting beyond said casing and slotted transversely, a standard projecting from said casing, a lever fulcrumed to said standard and extending through the slot in said plunger, a relatively long slotted standard projecting from the opposite side of said casing to that of the first-mentioned standard and to a point above the parallel plane of the top of said plunger, the free end of said lever being passed through the slot of said slotted standard and guided thereby, a float-lever pivoted to the upper end of said slotted standard, above said plunger-operating lever and extending parallel thereto transversely across the upper end of said plunger and means pivotally securing one end of said float-lever to the free end of said first-mentioned lever, projecting beyond the said slotted standard, the construction and arrangement being such that a lowering of the iioat-lever will raise the plunger, by means of its lever, the upward movement of said plunger being limited by contact with said iioat-lever, substantially as described.

2. In a valve for tanks, the combination of a suitable casing having a valve-seat formed therein, a cap for said casing provided with a vertical bore, a vertically-slidable plunger in said bore, adapted at its lower end to engage said valve-seat and provided at its upper end with a transverse slot, a relatively long radially extending fulcrum standard formed on the side of said cap, and extending above the horizontal plane of the top of said cap, a shorter standard formed on said cap opposite the relatively long standard, its top portion lying in the same horizontal plane as the slot in the plunger, a lever pivoted to the shorter standard and extending transversely through the slot of the plunger to a point beyond the extended standard, the por tion of such lever in said slot being broadened to fit snugly therein, a float-lever pivoted intermediate its ends to the extended fulcrum standard and lying transversely above the plunger, and a link connecting the short end of the float-lever with the free end of the plunger-lever.

In testimony whereof I hereunto aflix my signature in presence of two witnesses.

JOHN HENRY KOCH. Witnesses:

PAUL BROWN, MARTIN ONEILL.

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